318 RATTT^. 



anterior intcrtrochlcar surface being deeply chaunelled. The pha- 

 langeals of the pes are much shorter and stouter than in Dinar nis, 

 the proximal surface of the terminal segments generalljf presenting 

 a somewhat trefoil-shaped contour. 



The length of the tarso-metatarsus is much less than half that 

 of the tibio-tarsus. 



In the vertebral column the cervicals (fig. 70) are short, with 

 very stout centra, the prezygapophyses in the middle region being 

 nearly horizontal and separated from one another by a wide 

 channel; the posterior face of the centra tall and narrow; aud the 

 neural spines of the last two vertebrte much inclined forwards. 



In the dorsals (fig. 71) there is usually no anterior pneumatic 

 foramen till the fourth (or the last of those with a distinct htemal 

 carina), this foramen being situated on the line of the anterior 

 border of the rib-facet ; the third and fourth dorsals are extremely 

 compressed ; and throughout the series the neural spines and trans- 

 verse processes arc comparatively long. 



As additional characters of the skull it may be observed that the 

 sphenoidal rostrum is expanded in a lance-like shape at the anterior 

 extremity, in a manner unlike that of either of the other genera. 

 The supraoccipital never has a very strongly developed median 

 prominence ; and the temporal fossae are comparatively short. The 

 mandible may be readily distinguished from that of the other 

 genera by the low position of the inner aperture of the dental 

 canal, which pierces the bone obliquely to join the small lateral 

 vacuity. 



The general cranial features are decidedly nearer to Anomaloj^teryx 

 than to Emeus. 



The femur of Emeus, although approaching the above type, may 

 generally be distinguished by its shorter and less upwardly directed 

 head, taller great trochanter, less defined popliteal depression, and 

 longer shaft. 



Pachyornis, sp. a. 



{? =Pala2)teri/x crassus, Haast ^, = Dmornis crassus, Owen^*, in parte.) 



The undermentioned limb-bones are relatively more slender than 

 the corresponding bones of the typical form of P. elephantopus, and 

 not improbably indicate a distinct species. They may belong to 

 the form of which the skeleton is figured by Owen in his ' Extinct 

 Birds of New Zealand,' pi. cxiii. fig. 2, as Dinornis crassus, the 



1 Ibis, ser. 3, vol. iv. p. 212 (1874). 



2 Estiuct Birds of New Zealancl, pi. csiii. fig. 2 (ISV'Jj. 



